Hits : 426
Ajax – Php :: Mini How To
Asynchronous JavaScript and XML - PHP Hypertext Preprocessor
Η παραπάνω εικόνα είναι αντίγραφό της
Action Example
Εάν θέλετε να δείτε ένα παράδειγμα λειτουργίας βασισμένο στην αρχιτεκτονική ajax, πατήστε εδώ:
http://ebalaskas.gr/ajax/index.php
<?php
$starttime = explode(' ', microtime());
$starttime = $starttime[1] + $starttime[0];
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Names</title>
<script language="JavaScript">
var xmlHttp = createXmlHttpRequestObject();
function createXmlHttpRequestObject() {
var xmlHttp;
if(window.ActiveXObject) {
try {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e) {
xmlHttp = false;
}
}
else {
try {
xmlHttp = new XMLHttpRequest();
}
catch (e) {
xmlHttp = false;
}
}
if (!xmlHttp)
alert("Error creating the XMLHttpRequest object.");
else
return xmlHttp;
}
function process() {
if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0) {
name = encodeURIComponent(document.getElementById("myName").value);
xmlHttp.open("GET", "action.php?name=" + name, true);
xmlHttp.onreadystatechange = handleServerResponse;
xmlHttp.send(null);
}
else
setTimeout('process()', 1000);
}
function handleServerResponse() {
if (xmlHttp.readyState == 4) {
if (xmlHttp.status == 200) {
//document.getElementById("divMessage").innerHTML = "1 " + xmlHttp.responseXML.documentElement.firstChild.data;
document.getElementById("divMessage").innerHTML = xmlHttp.responseXML.getElementsByTagName("final")[0].firstChild.data;
setTimeout('process()', 1000);
}
else {
alert("There was a problem accessing the server: " + xmlHttp.statusText);
}
}
}
</script>
</head>
<body onload='process()'>
<p align="center">
<input type="text" id="myName" />
</p>
<p align="center">
<b><div id="divMessage" /></div></b>
</p>
<p align="center"><small>james - john - michael - david</small></p>
<p align="center"><a href="<?php echo $PHP_SELF; ?>">Reload</a></p>
<?php
$mtime = explode(' ', microtime());
printf('<p align=right>Page loaded in %.4f seconds.', ( ($mtime[0] + $mtime[1]) - $starttime) . "</p>");
?>
</body>
</html>
action.php
<?php
header('Content-Type: text/xml');
echo "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>";
if ( !empty ( $_GET['name'] ) ) {
$array = array('john', 'james', 'michael', 'david');
$name = array_search($_GET['name'], $array);
if (!empty($name)) $name = "Hello Master " . $_GET['name'];
else $name = "I dont know you";
}else $name="Give name";
echo "<final>".$name."</final>";
?>